Motion is, simply put, moving more than necessary when doing work. It can be large motions, such as walking between work areas, or small motions, such as flipping a screwdriver over after pulling it from a shadow board.
Motion waste also occurs in office environments. Walking to printers and fax machines, excessive clicking, or searching for supplies in a messy cabinet are all examples of wasted motion.
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Big wastes of motion are easily recognizable, and are often eliminated through common sense. But there is a limit to an individual’s ability to remove this waste on his or her own. When the layout of a work area is excessively large, often as a byproduct of overproduction, distances increase, leading to more wasted motion.
Small motion waste, though, is far more within the control of a person. It is also generally harder to recognize as waste, as there is an assumption that motion is just part of the job.
How many of these motions do you recognize from your workspace?
Each of these wastes are common in workplaces, but also have a tendency to be overlooked as a problem.
Small motion waste, though, adds up. And it increases in impact in high volume work areas. But even in areas with longer cycle times, small motion waste has an impact. The impact, though, is often in the form of future improvements. When a person reduces a reach or a tool twist that they do only a few times a day, the annual savings might just be a handful of minutes. The time invested in making small gains is often bigger than the savings over the next year or two. But focusing on these small motions raises awareness of the waste. And as new processes are developed, they are put in place with more of a focus on keeping waste out. That is where the substantial gains often come from.
Large motion waste—typically walking in large work areas, is often removed by limiting overproduction, which reduces the number of parts to walk past, and by creating product oriented work area, which reduces walking between stations.
Small motion waste is generally removed by implementing good 5S practices. Searching, reaching, and reorienting are all diminished when a work area is organized for effective production.
Some strategies to remove motion waste include:
Motion waste can seem very necessary. As a result, it is easy to be accepting of it. Try not to become complacent. When you get a bit of downtime due to line stops or parts shortages, try to go after the little wastes that bug you.
Motion waste is not as big of a frustration as defect waste, but it has a cumulative effect on your job satisfaction. It is often fatiguing, and makes your job take more out of you than it should. In most Lean jobs, you will be consistently all day, but motion waste, because it is unnatural, can take more energy out of you than a well-designed productive activity.
Provide your team with the tools to remove the small motion wastes from their job. This sort of improvement provides you with a great way to build a continuous improvement culture. People can rearrange tools on their own, or do simple 5S tasks. Stressing these sorts of improvement efforts does two main things.
Keep in mind, though, that if you set the expectation that people have to take on motion waste reduction on their own, you will have to provide tools and supplies to make the improvements. Your team will have limited time. Don’t make them spend it searching for tools.
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